657112426 has 4 divisors (see below), whose sum is σ = 985668642. Its totient is φ = 328556212.

The previous prime is 657112409. The next prime is 657112427. The reversal of 657112426 is 624211756.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 616777225 + 40335201 = 24835^2 + 6351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 657112391 and 657112400.

It is not an unprimeable number, because it can be changed into a prime (657112427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164278105 + ... + 164278108.

Almost surely, 2^657112426 is an apocalyptic number.

657112426 is a deficient number, since it is larger than the sum of its proper divisors (328556216).

657112426 is a wasteful number, since it uses less digits than its factorization.

657112426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328556215.

The product of its digits is 20160, while the sum is 34.

The square root of 657112426 is about 25634.2042201431. The cubic root of 657112426 is about 869.3871696022.

The spelling of 657112426 in words is "six hundred fifty-seven million, one hundred twelve thousand, four hundred twenty-six".